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A 0.0809-g sample of a purified organic acid was dissolved in an alcohol-water mixture and titrated with coulometrically generated hydroxide ions. With a current of 0.0441 A, 266 s was required to reach a phenolphthalein end point. Calculate the equivalent mass of the acid.
A block of mass m is dragged along a horizontal surface by a constant force of magnitude F applied at an angle above the horizontal. Find the work done on the block
Nan crystalline materials have grain sizes ranging from 0.01 to 0.1 microns. If the contribution of grain boundary strengthening in an alloy with grains of 0.1 microns is 20 MPa, what would you expect it to be if the grain size were reduced to 0.01 m..
water flows through a hydraulic turbine installed in a pipe that connects a high reservoir to a reservoir that is 40m
Bar AB is initially placed in a vertical position against a wall (θ= 0°). A small rock is placed on the bar at A. The bar is given a very small nudge to the right at B and starts sliding. Find the angle 0 at which the rock loses contact with the ba..
part 1 a piston-cylinder assembly has the piston fixed in place so it cannot move. the internal chamber is divided into
A piston-cylinder assembly contains a two-phase liquid-vapor mixture of ammonia initially at 500 kPa with a quality of 98%. Expansion occurs to a state where the pressure is 150 kPa. During the process the pressure and specific volume are related by ..
Assume you are given a spherical joint where the ball has a radius of 20 mm and socket has a radius of 22 mm. If the contact load is 50 N, E = 210 GPa, and ν = 0.3, determine (a) the radius of the contact area, (b) the maximum contact pressure.
A small ceramic crucible (mass of 0.26 kg) has just been washed and rinsed. Before it can be reused, it must be absolutely dry. To ensure that no residual water is present, the crucible is heated to 150 C from room temperature (23 ?C). How much heat ..
Prove that the transformation Q1 = q12 Q2 = q2 sec p2 p cos p2 - 2q2 P= 1 P2 = sin p2 - 2q1 1 2q1 cos p2 is canonical, by any method you choose . Find a suitable generating function that will lead to this transformation.
the steel rails of a railroad track are laid in the winter at a temperature of 15 f with gaps of 0.01 ft between the
oil enters a counterflow heat exchanger at 450k with a mass flow rate of 10 kgs and exits at 350k. a seperate stream of
Consider a continuous-time LTI system with the input-output relation given by y (t) = t e -(t -T)X (T) dT-00
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